package pageRank;

import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

/**
 * @author yuyufeng
 * @date 2017/11/6
 */
public class App {
    public static void main(String[] args) {
        Map<String,Set<String>> map  = new HashMap<>();
        Set<String> set = new HashSet<>();
        map.put("aa",set);
        set.add("bb");
        set.add("cc");

        for (String aa : map.get("aa")) {
            System.out.println(aa);
        }
    }
}
